<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>010-筛选元素-选择器.html</title>
</head>
<body>
	<div>div1</div>
	<div id="box1">div2</div>
	<div class="box2">div3</div>
</body>
<script src="js/jquery-1.12.4.js"></script>
<script>	
	$(function(){
		console.log($('div'));
		console.log($('#box1'));
		console.log($('.box2'));
	})
</script>
</html>